3 operating the samms-lv device – Siemens MCC-3298 User Manual

Page 23

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21

3 Operating the SAMMS-LV Device

.1

1

I

I

FLC

ratio

6

10

Motor starting current
600% rated full load current

Jam and loss of load
protection persistence
delay (5 times overload class)

Class 5 curve

Maximum
stall time
25 seconds

Jam protection
adjustable from
120 to 400% of FLC

Motor running current
at full load current

Loss of load
adjustable from
20 to 90% of
rated FLC

.1

1

10

100

1000

10000

100000

Seconds

Figure 3.10 Motor protection graph

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